#### What You Would See at the Speed of Light
If it were possible to travel at the speed of light, there are a few things you would observe:
1.
Time Freeze: According to the theory of special relativity, time dilation occurs as an object approaches the speed of light. From an external observer's perspective, the internal structure of your body would freeze, and no information could be sent about it. Additionally, your body's size would appear pointlike to an observer due to length contraction.
2.
4th Dimensional View: As a traveler moving at the speed of light, you would see the entire timeline of the universe all at once. You would perceive the beginning of the universe, the end, and everything in between as snapshots. It would be like a 3D viewer seeing every bit of a 2D plane at once, but in this case, you would see every bit of the 3D world without any obstacles.
3.
Observing the Past: If you were far enough away from Earth, you could observe events from the past. This is because light takes time to travel, so when you see something happening, you are actually seeing it as it was in the past. For example, if you had a mirror placed strategically 13.5 light-years away, you could see yourself being born. lol.
Traveling at the speed of light is currently not possible for objects with mass, according to our current understanding of physics. These observations are based on hypothetical scenarios and the principles of special relativity.
Sources :
1.
Would time freeze if you could travel at the speed of light?
2.
If you view the Earth from far enough away can you observe its past?
3.
I am driving my car at the speed of light and I turn on my headlights. What do I see?